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Wireless sensor network is one of the most important supporting technologies in the Internet of things, this paper studies the low power hierarchical routing protocol in the water environment. Energy is a vital problem in water environment. Wireless sensor network is composed of many wireless sensor nodes, which is a flexible and adaptive network. This paper studies the problem of low power consumption...
Grouping of vehicles into clusters proves to be very rewarding for VANETs as if it reutilizes all the resources within group and thereby increases the system capacity. The main idealization of our work is to provide selection criteria for next available cluster head node (NACH). The various parameters for selection criteria are speed, position, acceleration, directional threshold point, threshold...
Tactical Networks is typical Ad Hoc Network. Its structure leads to relative fixation for hierarchy and clustering. In order to maintain the cluster stabilization and network function in particular cases, Group leader election can be reached by address list message and connectedness message.
MANETS are a kind of Wireless ad hoc network that usually has a routable networking environment on top of a Link Layer ad hoc network. MANETs consist of a peer-to-peer, self-forming, self-healing network. This, in turn, increases the importance of bandwidth efficiency while maintaining tight requirements on energy consumption delay and jitter. Coordinated channel access protocols are in general not...
Energy utilization has been a major factor in deciding the efficiency of ubiquitous wireless sensor networks. Since most of the wireless nodes are powered by battery an effective algorithm is necessary to use the limited resource effectively. Data collision occurs in Intra-clustered network due to the use of Omni-directional antennas and any introduction of new node in to the network. In this paper,...
Localisation in wireless sensor network is the process of determining the geographical location of the sensor nodes. Conventional localization is space oriented which uses GPS (Global Positioning System) signal to obtain the location information of the nodes. But the GPS signals fail to work in indoor environments, the reason for which it becomes mandatory to opt for terrestrial localisation. The...
Based on the Bounded Delaunay Triangulation, Sink nodes' optimal mobile path was designed using Calculating Algorithm of Collecting Blind Area. And there movement is optimized by Hierarchical Clustering Algorithm. Sink nodes' movement is controlled in dominant regions to partially receive information from S nodes, which can reduce the expense of maintenance transmission path, and guarantee the reliability...
Prolonging the network lifetime, scalability and balancing are very important requirements when implementing a wireless sensor network (WSN). Clustering is a technique that has been widely applied for achieving these goals. However, there exists the energy hole problem which causes an unbalanced energy consumption in equally formed clusters. More specifically, nodes near the base station (BS) die...
To identifies the desired transmission range of each node in a cluster and power management based on mean transmission power within the context of wireless ad-hoc networks. By reducing the transmission range of the nodes, energy consumed by each node is decreased and topology is formed by sending messages between the nodes such as RTS and CTS. A new algorithm is formulated by deriving a mathematical...
We consider the joint routing and cooperation diversity problem in multi-hop networks, for which we seek to optimize the end-to-end outage. Simplifying the network structure via partitioning and identifying a set of nodes in each partition, we devise a routing strategy based on cooperative relays in decode-and-forward mode. In particular, this sub-optimal routing algorithm yields the best possible...
In wireless sensor networks, one of key techniques to save power consumption is a clustering. There are several location based clustering schemes. In these methods, a network area is divided into cells, and one node is selected as a cluster head in each cell. Making all nodes except cluster heads sleep, these methods can save power consumption. However, they can be applied to the static network topology...
This paper describes a routing system for a communication network constituted by several ad hoc mobile nodes. This system optimizes energy consumption. It divides the network into clusters. Thereafter it detects the best way in terms of energy to be taken by a stream of data. This consists to calculate the energy required for each available path and select the optimal gateways. Each cluster is identified...
A clustering architecture increases network lifetime, fault tolerance and results in more efficient use of network resources. Mobile Ad-hoc Networks (MANETs) are extremely vulnerable to a variety of misbehaviors because of their basic features like: lack of communication infrastructure, dynamic network topology and short transmission range. To detect and reduce those misbehaviors, numerous trust management...
Recently, cooperative communication is becoming an attractive technology as it can greatly improve the spatial diversity without additional antennas. The previous works have studied the cluster-based cooperative routing to explore the energy efficiency. However, some nodes may use up their energies immediately while they always act as the cluster-heads. Thus, this paper studies the lifetime-optimal...
A consensus approach can be exploited in order to maintain a desirable performance in ad-hoc networks which require low-power consumption. We show effects of interference on the consensus scheme for ad-hoc networks in terms of BER in this paper.
With the development of the Wireless Sensor Network (WSN), the number of sensor nodes in WSN is so large while one single node's resource is quite limited. One of the key goals of designing routing protocol of WSN is to reduce the energy consumption and maximize the networks' overall survival time. ICCA presents one cluster heads choosing algorithm based on the Low-Energy Adaptive Clustering Hierarchy...
Communication between clusters of wireless terminals in an ad hoc network can be initialized using distributed beamforming, where low-power wireless terminals cooperatively form a multiantenna array. Various methods for implementing distributed beamforming in wireless ad hoc networks have been considered before, but little research has been conducted so far in the connection initialization and cluster...
Data sensed and transferred between sensor nodes should be secure and preserve battery life. Some algorithms, such as LEACH (Low Energy Adaptive Clustering Hierarchy), have been proposed to efficiently organize sensor nodes into clusters, where a cluster-head, is elected to represent that cluster. To save energy, the cluster-head coordinates the cluster and forwards data generated within the cluster...
In wireless self-organized network (WSON), AOW clustering algorithms can achieve better performance and high adaptability, but having limitations in certain circumstances. In this paper, working procedure and shortcomings of AOW are introduced and analyzed firstly. Then, several modified algorithms based on AOW are designed according to system requirements. Simulation experiments are conducted to...
Wireless ad-hoc networks require a special management because of their hardware and energy limitations compared with wired networks. The problem of constructing a backbone structure over wireless ad-hoc networks has been widely researched. The basic problem is to minimize the wireless backbone size by taking into consideration the node's capabilities. Therefore, an efficient, self-organized, scalable,...
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